期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 708, 期 -, 页码 652-661出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.12.172
关键词
Magnesium anode; Hot extruding; Annealing; Microstructure; Mg-air battery
资金
- Fundamental Research Funds for the Central Universities of Central South University Project, China [2014zzts0019]
- National Natural Science Foundation of China [81472058]
- ShanDong province project of outstanding subject talent group
The discharge performance of Mg-6wt.%Al-1wt.%Sn alloy is enhanced by hot extruding and subsequent annealing treatment. Limited dynamic recrystallization is observed during the hot extruding process and the extruded alloy exhibits the non-uniform microstructure. Subsequently, 200 degrees C annealing treatment effectively facilitates the precipitation of second phases and spherical Mg2Sn phases with typical sizes of 50-100 nm uniformly distribute in the Mg-Al-Sn alloy. The 200 degrees C annealed Mg-Al-Sn anode shows the excellent discharge performance in 3.5 wt% NaCl solution, attributed to fine Mg2Sn phases and fully recrystallized microstructure which accelerate the self-peeling of corrosion products. With air battery tests, the 200 degrees C annealed Mg-Al-Sn alloy is a promising anode for magnesium-air batteries. (C) 2016 Elsevier B.V. All rights reserved.
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